I didn't want to put this in the article on the coordinated PR campaign, but the fact that one company refuses to cooperate with the US government in the way Apple, Facebook, Google, Microsoft, and others were more than willing to do, is very, very important. This means that the argument "but we had to do the things we did because Washington told us to" holds no water. Twitter's refusal proves that the others did not have to say yes - they chose to do so. Whenever someone - a corporate PR person, company blogger, or fanboy - tells you Microsoft, Apple, or Google had no choice, all you need to say is "Twitter".